Extracting prog: 11m3.233052347s
Minimizing prog: 8m43.025499434s
Simplifying prog options: 0s
Extracting C: 24.977060775s
Simplifying C: 11m39.683785544s


extracting reproducer from 24 programs
testing a last program of every proc
single: executing 4 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_xfrm-sendmsg$nl_xfrm-socket-bind$inet-sendto$inet
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): inotify_init1-inotify_add_watch-dup-openat-ioctl$sock_TIOCINQ
detailed listing:
executing program 0:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-mprotect-syz_usb_ep_write
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002000000406a053b030000000000010902220001010080320904000001030000000921110100012217000705810340"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000001c0)={0x24, 0x0, 0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0022170000000600ff0901a10185020901150026ff00750895098102c0"], 0x0}, 0x0)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
syz_usb_ep_write(r0, 0x81, 0xdb, &(0x7f00000000c0)="02c08183342c9f14674b16c095c243e29390a93faae99aace4db7df407d3b05cf3f8d0004a4419ede6bbc450807df9455a4b5c931342f2fd1400be291962800006a6323aa4fb4a59d2b50b7c9fb8702aceb85d90bb650f689f08ca950039a1994a41d781aebd31f7ccb91482fe84724e5f8172e190bd97a72c72ff45a8d2900811aad727791fccbab5897f228430b14fd192c94eaf1021ff7a18aea867f55dce61e502615054a85e35c30e811b3b2fb9c02362fdf6862a2eb2fe265aabee2770df90147c9c9b1a3f79e408ad1fcd5e610b92d40b2cad83108581ff")

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid-syz_open_dev$evdev-ioctl$EVIOCSKEYCODE_V2
detailed listing:
executing program 0:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000018105e04da0700000000000109022400010000000009040000090300000009210000000122220009058103"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000000c0)={0x24, 0x0, 0x0, &(0x7f0000000080)={0x0, 0x22, 0x22, {[@global=@item_012={0x2, 0x1, 0x9, "231b"}, @global=@item_012={0x2, 0x1, 0x0, "e53f"}, @global=@item_4={0x3, 0x1, 0x0, "0100"}, @local=@item_012={0x2, 0x2, 0x2, "9006"}, @main=@item_4={0x3, 0x0, 0x8, "749e821c"}, @local=@item_4={0x3, 0x2, 0x0, "8b923659"}, @local=@item_4={0x3, 0x2, 0x0, "09007a15"}, @main=@item_4={0x3, 0x0, 0x9, "85900eb7"}]}}, 0x0}, 0x0)
r1 = syz_open_dev$evdev(&(0x7f0000003880), 0x4, 0x2)
ioctl$EVIOCSKEYCODE_V2(r1, 0x40284504, &(0x7f0000000580)={0xa1, 0x9, 0x94b, 0x0, "46406c0ff8e97324106d6409a02711829bbbea0b41b7ed1a500dadf2091fafdb"})

program did not crash
single: failed to extract reproducer
bisect: bisecting 24 programs with base timeout 30s
testing program (duration=36s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
detailed listing:
executing program 2:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x4)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000240)={0x1, 0x0, [{0x4b564d02, 0xec000000, 0xcd}]})
executing program 2:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="12013f00000000407f04ffff000000000001090224000100000000090400001503000000092140000001220f00090581d7"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000002c0)={0x24, 0x0, 0x0, &(0x7f0000000080)=ANY=[@ANYBLOB="00220f000000040b4550182195f57584b3"], 0x0}, 0x0)
r1 = syz_open_dev$hiddev(&(0x7f0000000540), 0x0, 0x0)
ioctl$HIDIOCGFIELDINFO(r1, 0xc038480a, &(0x7f00000000c0)={0x3, 0x100, 0x9, 0x7fffffff, 0x2, 0x3, 0x52e, 0xf762, 0xfffffff1, 0xd, 0xb1, 0xc0, 0x3ff, 0x1})
executing program 1:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000200), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_GUEST_DEBUG_x86(r2, 0x4048ae9b, &(0x7f0000000080)={0xe0003, 0x0, {[0xffffffffffffffff, 0x1f8, 0x83, 0xffffffffefffff15, 0x3, 0x4, 0x1, 0x4]}})
ioctl$KVM_SET_DEBUGREGS(r2, 0x4080aea2, &(0x7f0000000100)={[0x2b000, 0x200000, 0xfec00000, 0x5000], 0x9, 0xb8})
executing program 1:
socket$packet(0x11, 0x3, 0x300)
r0 = socket$inet_tcp(0x2, 0x1, 0x0)
pselect6(0x40, &(0x7f00000001c0)={0x3, 0x4, 0x0, 0x0, 0x10000000004, 0x80000000, 0x200, 0x1ff}, 0x0, &(0x7f0000000040)={0x18, 0xfffffffffffffffd, 0x0, 0x2, 0x0, 0x9, 0x2003ff, 0x80000001}, 0x0, 0x0)
bind$inet(r0, &(0x7f0000000080)={0x2, 0x4e21, @broadcast}, 0x10)
connect$inet(r0, &(0x7f0000000180)={0x2, 0x4e21, @local}, 0x10)
executing program 2:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/usb/drivers/usb-storage/remove_id\x00', 0x1, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000540)='fd/3\x00')
preadv(r0, &(0x7f0000002b40)=[{&(0x7f0000000200)=""/237, 0xed}], 0x1, 0xf, 0x94b8)
executing program 2:
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000000c0)='freezer.state\x00', 0x275a, 0x0)
fcntl$lock(r0, 0x6, &(0x7f0000000000)={0x1, 0x0, 0x1002, 0x20000000001000})
fcntl$lock(r0, 0x26, &(0x7f0000000300)={0x1, 0x0, 0x2005, 0x1fd})
fcntl$lock(r0, 0x26, &(0x7f0000000280)={0x1, 0x2, 0x2b, 0x9})
fcntl$lock(r0, 0x7, &(0x7f0000000140)={0x1, 0x1, 0x1, 0x90})
executing program 0:
mmap$IORING_OFF_SQ_RING(0x0, 0xc00000, 0x4000002, 0x14032, 0xffffffffffffffff, 0x0)
r0 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000040)={0x1, &(0x7f0000000000)=[{0x6, 0x0, 0x0, 0x7fff7ffc}]})
close_range(r0, 0xffffffffffffffff, 0x0)
openat$ptp0(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
clock_gettime(0xfffffffffffffffb, 0x0)
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000080), 0x101200, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x2)
ioctl$KVM_SET_VCPU_EVENTS(r2, 0x4040aea0, &(0x7f0000000180)=@x86={0x84, 0x7, 0x8, 0x0, 0x5, 0xcd, 0x5, 0x40, 0x8, 0x1, 0xc, 0x2, 0x0, 0x9, 0xd, 0x7, 0x2, 0xdb, 0x58, '\x00', 0x14, 0x45})
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000016000/0x18000)=nil, &(0x7f0000000080)=[@text32={0x20, 0x0}], 0x1, 0x65, 0x0, 0x0)
executing program 0:
r0 = socket$inet_udp(0x2, 0x2, 0x0)
setsockopt$sock_int(r0, 0x1, 0x3c, &(0x7f00000000c0)=0x1, 0x4)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000080)='vlan0\x00', 0x10)
sendto$inet(r0, 0x0, 0x0, 0x8000, &(0x7f0000000180)={0x2, 0x4e21, @multicast2}, 0x10)
sendto$inet(r0, &(0x7f0000000100)='J', 0xfdbe, 0x4004084, 0x0, 0x11000a00)
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x109000, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f00000000c0)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x4)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f00000002c0)=0x33)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./binfmt\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./binfmt\x00', &(0x7f0000000240)='binfmt_misc\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./binfmt/status\x00', 0x1, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000480)='fd/3\x00')
preadv(r0, &(0x7f0000000240)=[{&(0x7f00000000c0)=""/118, 0x76}], 0x1, 0x5c, 0x65a)
executing program 3:
r0 = socket(0xa, 0x2400000001, 0x0)
setsockopt$inet6_MCAST_JOIN_GROUP(r0, 0x29, 0x2a, &(0x7f0000034000)={0x4, {{0xa, 0x4e24, 0xffffffc0, @mcast2, 0x22}}}, 0x88)
setsockopt$inet6_MCAST_JOIN_GROUP(r0, 0x29, 0x2a, &(0x7f0000000480)={0x3, {{0xa, 0x4, 0x0, @mcast1, 0xbdf}}}, 0x88)
r1 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000000)=[{0x6, 0x10, 0x0, 0x7fff7ffc}]})
close_range(r1, 0xffffffffffffffff, 0x0)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000001700)='./dev/kmsg\x00', 0x1, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
write$binfmt_script(r0, 0x0, 0x0)
executing program 3:
setns(0xc9, 0x0)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001})
syz_usb_connect$hid(0x3, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x10, 0x738, 0x1709, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0xa0, 0x8f, "", [{{0x9, 0x4, 0x0, 0xb7, 0x1, 0x3, 0x0, 0x2, 0x0, {0x9, 0x21, 0x5, 0xfd, 0x1, {0x22, 0x2b}}, {{{0x9, 0x5, 0x81, 0x3, 0x10, 0xd, 0xc1, 0xf9}}}}}]}}]}}, 0x0)
write$tun(r0, &(0x7f0000000040)={@void, @val={0x9bc6d90f757e8b09, 0x5, 0x20, 0x10, 0x14, 0x6}, @ipv4=@dccp={{0x7, 0x4, 0x1, 0x8, 0x2c, 0x68, 0x0, 0x4b, 0x21, 0x0, @dev={0xac, 0x14, 0x14, 0x15}, @rand_addr=0x64010101, {[@ra={0x94, 0x4, 0x1}, @rr={0x7, 0x3, 0xed}]}}, {{0x4e23, 0x4e24, 0x4, 0x1, 0x5, 0x0, 0x0, 0x8, 0x1, "56b371", 0x2, "5d8acc"}}}}, 0x36)
executing program 1:
r0 = socket$inet6(0xa, 0x800000000000002, 0x0)
setsockopt$sock_linger(r0, 0x1, 0x3d, &(0x7f0000000080)={0xb}, 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4e21, 0x1, @mcast1, 0x5}, 0x1c)
sendmmsg$sock(r0, &(0x7f0000004440)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000001c00)=[@txtime={{0x18, 0x1, 0x3d, 0x3}}], 0x18}}, {{0x0, 0x0, 0x0}}], 0x2, 0xc004)
write(r0, 0x0, 0x0)
executing program 1:
timer_create(0x2, 0x0, 0x0)
r0 = openat$rnullb(0xffffffffffffff9c, &(0x7f0000000380), 0x14dd82, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x7, 0x12, r0, 0xe858000)
madvise(&(0x7f00000b3000/0x2000)=nil, 0x2000, 0xe)
mlock(&(0x7f0000000000/0x800000)=nil, 0x800000)
executing program 2:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x121002, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000280)={0x1, 0x0, [{0x40000070, 0x0, 0x6}]})
executing program 2:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000018105e04da0700000000000109022400010000000009040000090300000009210000000122220009058103"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000000c0)={0x24, 0x0, 0x0, &(0x7f0000000080)={0x0, 0x22, 0x22, {[@global=@item_012={0x2, 0x1, 0x9, "231b"}, @global=@item_012={0x2, 0x1, 0x0, "e53f"}, @global=@item_4={0x3, 0x1, 0x0, "0100"}, @local=@item_012={0x2, 0x2, 0x2, "9006"}, @main=@item_4={0x3, 0x0, 0x8, "749e821c"}, @local=@item_4={0x3, 0x2, 0x0, "8b923659"}, @local=@item_4={0x3, 0x2, 0x0, "09007a15"}, @main=@item_4={0x3, 0x0, 0x9, "85900eb7"}]}}, 0x0}, 0x0)
r1 = syz_open_dev$evdev(&(0x7f0000003880), 0x4, 0x2)
ioctl$EVIOCSKEYCODE_V2(r1, 0x40284504, &(0x7f0000000580)={0xa1, 0x9, 0x94b, 0x0, "46406c0ff8e97324106d6409a02711829bbbea0b41b7ed1a500dadf2091fafdb"})
executing program 1:
dup(0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./mydev\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./mydev\x00', &(0x7f0000000300)='devtmpfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./mydev/ttyS0\x00', 0x2, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
executing program 1:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002000000406a053b030000000000010902220001010080320904000001030000000921110100012217000705810340"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000001c0)={0x24, 0x0, 0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0022170000000600ff0901a10185020901150026ff00750895098102c0"], 0x0}, 0x0)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
syz_usb_ep_write(r0, 0x81, 0xdb, &(0x7f00000000c0)="02c08183342c9f14674b16c095c243e29390a93faae99aace4db7df407d3b05cf3f8d0004a4419ede6bbc450807df9455a4b5c931342f2fd1400be291962800006a6323aa4fb4a59d2b50b7c9fb8702aceb85d90bb650f689f08ca950039a1994a41d781aebd31f7ccb91482fe84724e5f8172e190bd97a72c72ff45a8d2900811aad727791fccbab5897f228430b14fd192c94eaf1021ff7a18aea867f55dce61e502615054a85e35c30e811b3b2fb9c02362fdf6862a2eb2fe265aabee2770df90147c9c9b1a3f79e408ad1fcd5e610b92d40b2cad83108581ff")
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000000)='./file0\x00')
openat$binfmt(0xffffffffffffff9c, r0, 0x41, 0x1ff)
r1 = openat$fuse(0xffffffffffffff9c, &(0x7f0000001180), 0x2, 0x0)
mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f00000010c0)={{'fd', 0x3d, r1}, 0x2c, {'rootmode', 0x3d, 0x8000}})
write$FUSE_NOTIFY_POLL(r1, &(0x7f00000000c0)={0x18, 0x1, 0x0, {0x4}}, 0x18)
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program crashed: WARNING in shmem_rmdir
bisect: bisecting 24 programs
bisect: split chunks (needed=false): <24>
bisect: split chunk #0 of len 24 into 3 parts
bisect: testing without sub-chunk 1/3
testing program (duration=34s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5]
detailed listing:
executing program 0:
r0 = socket$inet_udp(0x2, 0x2, 0x0)
setsockopt$sock_int(r0, 0x1, 0x3c, &(0x7f00000000c0)=0x1, 0x4)
setsockopt$SO_BINDTODEVICE(r0, 0x1, 0x19, &(0x7f0000000080)='vlan0\x00', 0x10)
sendto$inet(r0, 0x0, 0x0, 0x8000, &(0x7f0000000180)={0x2, 0x4e21, @multicast2}, 0x10)
sendto$inet(r0, &(0x7f0000000100)='J', 0xfdbe, 0x4004084, 0x0, 0x11000a00)
executing program 0:
r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f0000000000), 0x109000, 0x0)
ioctl$TIOCSETD(r0, 0x5423, &(0x7f00000000c0)=0xf)
ioctl$TCFLSH(r0, 0x400455c8, 0x4)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
ioctl$TIOCSTI(r0, 0x5412, &(0x7f00000002c0)=0x33)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./binfmt\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./binfmt\x00', &(0x7f0000000240)='binfmt_misc\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./binfmt/status\x00', 0x1, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000480)='fd/3\x00')
preadv(r0, &(0x7f0000000240)=[{&(0x7f00000000c0)=""/118, 0x76}], 0x1, 0x5c, 0x65a)
executing program 3:
r0 = socket(0xa, 0x2400000001, 0x0)
setsockopt$inet6_MCAST_JOIN_GROUP(r0, 0x29, 0x2a, &(0x7f0000034000)={0x4, {{0xa, 0x4e24, 0xffffffc0, @mcast2, 0x22}}}, 0x88)
setsockopt$inet6_MCAST_JOIN_GROUP(r0, 0x29, 0x2a, &(0x7f0000000480)={0x3, {{0xa, 0x4, 0x0, @mcast1, 0xbdf}}}, 0x88)
r1 = seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x1, &(0x7f0000000000)=[{0x6, 0x10, 0x0, 0x7fff7ffc}]})
close_range(r1, 0xffffffffffffffff, 0x0)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000001500)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000001500)='./dev\x00', &(0x7f0000001600)='devtmpfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000001700)='./dev/kmsg\x00', 0x1, 0x0)
r0 = syz_open_procfs(0x0, &(0x7f0000000000)='fd/3\x00')
write$binfmt_script(r0, 0x0, 0x0)
executing program 3:
setns(0xc9, 0x0)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'syzkaller1\x00', 0x5001})
syz_usb_connect$hid(0x3, 0x36, &(0x7f0000000040)={{0x12, 0x1, 0x200, 0x0, 0x0, 0x0, 0x10, 0x738, 0x1709, 0x0, 0x0, 0x0, 0x0, 0x1, [{{0x9, 0x2, 0x24, 0x1, 0x0, 0x0, 0xa0, 0x8f, "", [{{0x9, 0x4, 0x0, 0xb7, 0x1, 0x3, 0x0, 0x2, 0x0, {0x9, 0x21, 0x5, 0xfd, 0x1, {0x22, 0x2b}}, {{{0x9, 0x5, 0x81, 0x3, 0x10, 0xd, 0xc1, 0xf9}}}}}]}}]}}, 0x0)
write$tun(r0, &(0x7f0000000040)={@void, @val={0x9bc6d90f757e8b09, 0x5, 0x20, 0x10, 0x14, 0x6}, @ipv4=@dccp={{0x7, 0x4, 0x1, 0x8, 0x2c, 0x68, 0x0, 0x4b, 0x21, 0x0, @dev={0xac, 0x14, 0x14, 0x15}, @rand_addr=0x64010101, {[@ra={0x94, 0x4, 0x1}, @rr={0x7, 0x3, 0xed}]}}, {{0x4e23, 0x4e24, 0x4, 0x1, 0x5, 0x0, 0x0, 0x8, 0x1, "56b371", 0x2, "5d8acc"}}}}, 0x36)
executing program 1:
r0 = socket$inet6(0xa, 0x800000000000002, 0x0)
setsockopt$sock_linger(r0, 0x1, 0x3d, &(0x7f0000000080)={0xb}, 0x8)
connect$inet6(r0, &(0x7f0000000000)={0xa, 0x4e21, 0x1, @mcast1, 0x5}, 0x1c)
sendmmsg$sock(r0, &(0x7f0000004440)=[{{0x0, 0x0, 0x0, 0x0, &(0x7f0000001c00)=[@txtime={{0x18, 0x1, 0x3d, 0x3}}], 0x18}}, {{0x0, 0x0, 0x0}}], 0x2, 0xc004)
write(r0, 0x0, 0x0)
executing program 1:
timer_create(0x2, 0x0, 0x0)
r0 = openat$rnullb(0xffffffffffffff9c, &(0x7f0000000380), 0x14dd82, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0x7, 0x12, r0, 0xe858000)
madvise(&(0x7f00000b3000/0x2000)=nil, 0x2000, 0xe)
mlock(&(0x7f0000000000/0x800000)=nil, 0x800000)
executing program 2:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x121002, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000280)={0x1, 0x0, [{0x40000070, 0x0, 0x6}]})
executing program 2:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000018105e04da0700000000000109022400010000000009040000090300000009210000000122220009058103"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000000c0)={0x24, 0x0, 0x0, &(0x7f0000000080)={0x0, 0x22, 0x22, {[@global=@item_012={0x2, 0x1, 0x9, "231b"}, @global=@item_012={0x2, 0x1, 0x0, "e53f"}, @global=@item_4={0x3, 0x1, 0x0, "0100"}, @local=@item_012={0x2, 0x2, 0x2, "9006"}, @main=@item_4={0x3, 0x0, 0x8, "749e821c"}, @local=@item_4={0x3, 0x2, 0x0, "8b923659"}, @local=@item_4={0x3, 0x2, 0x0, "09007a15"}, @main=@item_4={0x3, 0x0, 0x9, "85900eb7"}]}}, 0x0}, 0x0)
r1 = syz_open_dev$evdev(&(0x7f0000003880), 0x4, 0x2)
ioctl$EVIOCSKEYCODE_V2(r1, 0x40284504, &(0x7f0000000580)={0xa1, 0x9, 0x94b, 0x0, "46406c0ff8e97324106d6409a02711829bbbea0b41b7ed1a500dadf2091fafdb"})
executing program 1:
dup(0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./mydev\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./mydev\x00', &(0x7f0000000300)='devtmpfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./mydev/ttyS0\x00', 0x2, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
executing program 1:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002000000406a053b030000000000010902220001010080320904000001030000000921110100012217000705810340"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000001c0)={0x24, 0x0, 0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0022170000000600ff0901a10185020901150026ff00750895098102c0"], 0x0}, 0x0)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
syz_usb_ep_write(r0, 0x81, 0xdb, &(0x7f00000000c0)="02c08183342c9f14674b16c095c243e29390a93faae99aace4db7df407d3b05cf3f8d0004a4419ede6bbc450807df9455a4b5c931342f2fd1400be291962800006a6323aa4fb4a59d2b50b7c9fb8702aceb85d90bb650f689f08ca950039a1994a41d781aebd31f7ccb91482fe84724e5f8172e190bd97a72c72ff45a8d2900811aad727791fccbab5897f228430b14fd192c94eaf1021ff7a18aea867f55dce61e502615054a85e35c30e811b3b2fb9c02362fdf6862a2eb2fe265aabee2770df90147c9c9b1a3f79e408ad1fcd5e610b92d40b2cad83108581ff")
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000000)='./file0\x00')
openat$binfmt(0xffffffffffffff9c, r0, 0x41, 0x1ff)
r1 = openat$fuse(0xffffffffffffff9c, &(0x7f0000001180), 0x2, 0x0)
mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f00000010c0)={{'fd', 0x3d, r1}, 0x2c, {'rootmode', 0x3d, 0x8000}})
write$FUSE_NOTIFY_POLL(r1, &(0x7f00000000c0)={0x18, 0x1, 0x0, {0x4}}, 0x18)
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program crashed: WARNING in shmem_rmdir
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/3
testing program (duration=32s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5, 5, 5, 5, 5]
detailed listing:
executing program 2:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x121002, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_MSRS(r2, 0x4008ae89, &(0x7f0000000280)={0x1, 0x0, [{0x40000070, 0x0, 0x6}]})
executing program 2:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000018105e04da0700000000000109022400010000000009040000090300000009210000000122220009058103"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000000c0)={0x24, 0x0, 0x0, &(0x7f0000000080)={0x0, 0x22, 0x22, {[@global=@item_012={0x2, 0x1, 0x9, "231b"}, @global=@item_012={0x2, 0x1, 0x0, "e53f"}, @global=@item_4={0x3, 0x1, 0x0, "0100"}, @local=@item_012={0x2, 0x2, 0x2, "9006"}, @main=@item_4={0x3, 0x0, 0x8, "749e821c"}, @local=@item_4={0x3, 0x2, 0x0, "8b923659"}, @local=@item_4={0x3, 0x2, 0x0, "09007a15"}, @main=@item_4={0x3, 0x0, 0x9, "85900eb7"}]}}, 0x0}, 0x0)
r1 = syz_open_dev$evdev(&(0x7f0000003880), 0x4, 0x2)
ioctl$EVIOCSKEYCODE_V2(r1, 0x40284504, &(0x7f0000000580)={0xa1, 0x9, 0x94b, 0x0, "46406c0ff8e97324106d6409a02711829bbbea0b41b7ed1a500dadf2091fafdb"})
executing program 1:
dup(0xffffffffffffffff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./mydev\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./mydev\x00', &(0x7f0000000300)='devtmpfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./mydev/ttyS0\x00', 0x2, 0x0)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
executing program 1:
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010002000000406a053b030000000000010902220001010080320904000001030000000921110100012217000705810340"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000001c0)={0x24, 0x0, 0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="0022170000000600ff0901a10185020901150026ff00750895098102c0"], 0x0}, 0x0)
mprotect(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1)
syz_usb_ep_write(r0, 0x81, 0xdb, &(0x7f00000000c0)="02c08183342c9f14674b16c095c243e29390a93faae99aace4db7df407d3b05cf3f8d0004a4419ede6bbc450807df9455a4b5c931342f2fd1400be291962800006a6323aa4fb4a59d2b50b7c9fb8702aceb85d90bb650f689f08ca950039a1994a41d781aebd31f7ccb91482fe84724e5f8172e190bd97a72c72ff45a8d2900811aad727791fccbab5897f228430b14fd192c94eaf1021ff7a18aea867f55dce61e502615054a85e35c30e811b3b2fb9c02362fdf6862a2eb2fe265aabee2770df90147c9c9b1a3f79e408ad1fcd5e610b92d40b2cad83108581ff")
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000000)='./file0\x00')
openat$binfmt(0xffffffffffffff9c, r0, 0x41, 0x1ff)
r1 = openat$fuse(0xffffffffffffff9c, &(0x7f0000001180), 0x2, 0x0)
mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f00000010c0)={{'fd', 0x3d, r1}, 0x2c, {'rootmode', 0x3d, 0x8000}})
write$FUSE_NOTIFY_POLL(r1, &(0x7f00000000c0)={0x18, 0x1, 0x0, {0x4}}, 0x18)
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program crashed: WARNING in shmem_rmdir
bisect: the chunk can be dropped
bisect: testing without sub-chunk 3/3
bisect: split chunks (needed=true): <8>
bisect: split chunk #0 of len 8 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=31s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5, 5, 5]
detailed listing:
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000000)='./file0\x00')
openat$binfmt(0xffffffffffffff9c, r0, 0x41, 0x1ff)
r1 = openat$fuse(0xffffffffffffff9c, &(0x7f0000001180), 0x2, 0x0)
mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f00000010c0)={{'fd', 0x3d, r1}, 0x2c, {'rootmode', 0x3d, 0x8000}})
write$FUSE_NOTIFY_POLL(r1, &(0x7f00000000c0)={0x18, 0x1, 0x0, {0x4}}, 0x18)
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program crashed: WARNING in shmem_rmdir
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/2
bisect: no need to test this chunk, it's definitely needed
bisect: split chunks (needed=true): <4>
bisect: split chunk #0 of len 4 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5]
detailed listing:
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000000)='./file0\x00')
openat$binfmt(0xffffffffffffff9c, r0, 0x41, 0x1ff)
r1 = openat$fuse(0xffffffffffffff9c, &(0x7f0000001180), 0x2, 0x0)
mount$fuse(0x0, &(0x7f00000020c0)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f00000010c0)={{'fd', 0x3d, r1}, 0x2c, {'rootmode', 0x3d, 0x8000}})
write$FUSE_NOTIFY_POLL(r1, &(0x7f00000000c0)={0x18, 0x1, 0x0, {0x4}}, 0x18)
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000240)=@updpolicy={0xc0, 0x19, 0x13ca78670876f9b3, 0x0, 0x25dfdc01, {{@in=@broadcast, @in=@local, 0x4e24, 0x0, 0x4e25, 0x0, 0x2, 0x20, 0x20, 0xc6}, {0x0, 0x7, 0x0, 0x0, 0x0, 0x2}, {0x3, 0x0, 0x0, 0xfffffffffffffffd}, 0x0, 0x0, 0x1, 0x1, 0x0, 0x3}, [@XFRMA_IF_ID={0x8, 0x1f, 0x1}]}, 0xc0}}, 0x0)
r1 = socket(0x2, 0x3, 0x6)
bind$inet(r1, &(0x7f0000000080)={0x2, 0xfffa, @local}, 0x10)
sendto$inet(r1, 0x0, 0x17, 0x48890, &(0x7f0000000000)={0x2, 0x4e24, @broadcast}, 0x10)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [5, 5]
detailed listing:
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)

program crashed: WARNING in shmem_rmdir
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <2>
bisect: split chunk #0 of len 2 into 2 parts
bisect: testing without sub-chunk 1/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): inotify_init1-inotify_add_watch-dup-openat-ioctl$sock_TIOCINQ
detailed listing:
executing program 3:
r0 = inotify_init1(0x0)
inotify_add_watch(r0, &(0x7f0000000200)='.\x00', 0x44000160)
r1 = dup(r0)
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x109342, 0x0)
ioctl$sock_TIOCINQ(r1, 0x541b, 0x0)

program did not crash
bisect: testing without sub-chunk 2/2
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mkdir-mount$incfs-chdir-openat
detailed listing:
executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)

program crashed: WARNING in shmem_rmdir
bisect: the chunk can be dropped
bisect: split chunks (needed=true): <1>
bisect: split chunk #0 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: 1 programs left: 

executing program 3:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)


bisect: trying to concatenate
bisect: concatenate 1 entries
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mkdir-mount$incfs-chdir-openat
detailed listing:
executing program 0:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')
openat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x20c01, 0x0)

program crashed: WARNING in shmem_rmdir
bisect: concatenation succeeded
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mkdir-mount$incfs-chdir
detailed listing:
executing program 0:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)
chdir(&(0x7f00000001c0)='./bus\x00')

program crashed: WARNING in shmem_rmdir
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mkdir-mount$incfs
detailed listing:
executing program 0:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program crashed: WARNING in shmem_rmdir
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mkdir
detailed listing:
executing program 0:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)

program did not crash
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): open-mount$incfs
detailed listing:
executing program 0:
open(&(0x7f00009e1000)='./file0\x00', 0x149442, 0x40)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program did not crash
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program crashed: WARNING in shmem_rmdir
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(0x0, 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program did not crash
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(0x0, &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program did not crash
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', 0x0, &(0x7f0000000840), 0x1004002, 0x0)

program did not crash
testing program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', 0x0, 0x1004002, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=42.03211497s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
simplifying C reproducer
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program did not crash
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program did not crash
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program did not crash
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing compiled C program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
program crashed: WARNING in shmem_rmdir
testing program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program crashed: WARNING in shmem_rmdir
validation run: crashed=true
testing program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program crashed: WARNING in shmem_rmdir
validation run: crashed=true
testing program (duration=42.03211497s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdir-mount$incfs
detailed listing:
executing program 0:
mkdir(&(0x7f00000000c0)='./bus\x00', 0x0)
mount$incfs(&(0x7f00000007c0)='.\x00', &(0x7f0000000800)='./bus\x00', &(0x7f0000000840), 0x1004002, 0x0)

program crashed: WARNING in shmem_rmdir
validation run: crashed=true
reproducing took 34m30.055247377s
repro crashed as (corrupted=false):
veth0_vlan: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 377 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340
Modules linked in:
CPU: 0 UID: 0 PID: 377 Comm: syz-executor Not tainted syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340
Code: 04 00 00 be 08 00 00 00 e8 7f 12 ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 48 c0 b4 03 cc e8 22 33 95 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c
RSP: 0018:ffffc90001b5fc88 EFLAGS: 00010293
RAX: ffffffff81f23e9e RBX: ffff88812b784070 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcb0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200036bf80 R12: dffffc0000000000
R13: 1ffff110256f0817 R14: ffff88812b7840b8 R15: 0000000000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558ba10958 CR3: 000000010e782000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 shmem_rmdir+0x5f/0x90 mm/shmem.c:3826
 vfs_rmdir+0x3db/0x560 fs/namei.c:4348
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452
Write of size 4 at addr 0000000000000168 by task syz-executor/377

CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G        W          syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_report+0x3d/0x70 mm/kasan/report.c:484
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189
 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
 ihold+0x24/0x70 fs/inode.c:452
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x25c/0x560 fs/namei.c:4361
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000168
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 800000010d7da067 P4D 800000010d7da067 PUD 0 
Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 377 Comm: syz-executor Tainted: G    B   W          syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 0d 2a 95 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 3c 09 ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 1d
RSP: 0018:ffffc90001b5fcc8 EFLAGS: 00010246
RAX: ffff888115c79300 RBX: 0000000000000000 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcd8 R08: ffffffff88bb7947 R09: 1ffffffff1176f28
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010e782000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x25c/0x560 fs/namei.c:4361
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
Modules linked in:
CR2: 0000000000000168
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 0d 2a 95 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 3c 09 ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 1d
RSP: 0018:ffffc90001b5fcc8 EFLAGS: 00010246
RAX: ffff888115c79300 RBX: 0000000000000000 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcd8 R08: ffffffff88bb7947 R09: 1ffffffff1176f28
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010e782000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	f3 0f 1e fa          	endbr64
   4:	55                   	push   %rbp
   5:	48 89 e5             	mov    %rsp,%rbp
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	48 89 fb             	mov    %rdi,%rbx
   e:	e8 0d 2a 95 ff       	call   0xff952a20
  13:	48 8d bb 68 01 00 00 	lea    0x168(%rbx),%rdi
  1a:	be 04 00 00 00       	mov    $0x4,%esi
  1f:	e8 3c 09 ee ff       	call   0xffee0960
  24:	41 be 01 00 00 00    	mov    $0x1,%r14d
* 2a:	f0 44 0f c1 b3 68 01 	lock xadd %r14d,0x168(%rbx) <-- trapping instruction
  31:	00 00
  33:	41 ff c6             	inc    %r14d
  36:	bf 02 00 00 00       	mov    $0x2,%edi
  3b:	44 89 f6             	mov    %r14d,%esi
  3e:	e8                   	.byte 0xe8
  3f:	1d                   	.byte 0x1d

final repro crashed as (corrupted=false):
veth0_vlan: entered promiscuous mode
veth1_macvtap: entered promiscuous mode
------------[ cut here ]------------
WARNING: CPU: 0 PID: 377 at fs/inode.c:340 drop_nlink+0xce/0x110 fs/inode.c:340
Modules linked in:
CPU: 0 UID: 0 PID: 377 Comm: syz-executor Not tainted syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:drop_nlink+0xce/0x110 fs/inode.c:340
Code: 04 00 00 be 08 00 00 00 e8 7f 12 ee ff f0 48 ff 83 b8 04 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 48 c0 b4 03 cc e8 22 33 95 ff <0f> 0b eb 81 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 59 ff ff ff 4c
RSP: 0018:ffffc90001b5fc88 EFLAGS: 00010293
RAX: ffffffff81f23e9e RBX: ffff88812b784070 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcb0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff5200036bf80 R12: dffffc0000000000
R13: 1ffff110256f0817 R14: ffff88812b7840b8 R15: 0000000000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558ba10958 CR3: 000000010e782000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 shmem_rmdir+0x5f/0x90 mm/shmem.c:3826
 vfs_rmdir+0x3db/0x560 fs/namei.c:4348
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
---[ end trace 0000000000000000 ]---
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: null-ptr-deref in atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
BUG: KASAN: null-ptr-deref in ihold+0x24/0x70 fs/inode.c:452
Write of size 4 at addr 0000000000000168 by task syz-executor/377

CPU: 1 UID: 0 PID: 377 Comm: syz-executor Tainted: G        W          syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x140/0x1c0 lib/dump_stack.c:120
 print_report+0x3d/0x70 mm/kasan/report.c:484
 kasan_report+0x162/0x1a0 mm/kasan/report.c:594
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x25a/0x2b0 mm/kasan/generic.c:189
 __kasan_check_write+0x18/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc_return include/linux/atomic/atomic-instrumented.h:453 [inline]
 ihold+0x24/0x70 fs/inode.c:452
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x25c/0x560 fs/namei.c:4361
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000168
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 800000010d7da067 P4D 800000010d7da067 PUD 0 
Oops: Oops: 0002 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 377 Comm: syz-executor Tainted: G    B   W          syzkaller #0 2456bfd0916d80188827445f664284f1a044436b
Tainted: [B]=BAD_PAGE, [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 0d 2a 95 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 3c 09 ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 1d
RSP: 0018:ffffc90001b5fcc8 EFLAGS: 00010246
RAX: ffff888115c79300 RBX: 0000000000000000 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcd8 R08: ffffffff88bb7947 R09: 1ffffffff1176f28
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010e782000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 d_delete_notify include/linux/fsnotify.h:357 [inline]
 vfs_rmdir+0x25c/0x560 fs/namei.c:4361
 incfs_kill_sb+0x102/0x220 fs/incfs/vfs.c:1968
 deactivate_locked_super+0xd2/0x270 fs/super.c:478
 deactivate_super+0xb8/0xe0 fs/super.c:511
 cleanup_mnt+0x438/0x4d0 fs/namespace.c:1380
 __cleanup_mnt+0x1d/0x40 fs/namespace.c:1387
 task_work_run+0x1e8/0x260 kernel/task_work.c:246
 resume_user_mode_work+0x35/0x50 include/linux/resume_user_mode.h:50
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x63/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f372b19f317
Code: a2 c7 05 dc 43 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fffec72f1d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f372b19f317
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffec72f290
RBP: 00007fffec72f290 R08: 00007fffec730290 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffec730320
R13: 00007f372b234474 R14: 00000000000084f0 R15: 00007fffec730360
 </TASK>
Modules linked in:
CR2: 0000000000000168
---[ end trace 0000000000000000 ]---
RIP: 0010:arch_atomic_add_return arch/x86/include/asm/atomic.h:85 [inline]
RIP: 0010:raw_atomic_add_return include/linux/atomic/atomic-arch-fallback.h:564 [inline]
RIP: 0010:raw_atomic_inc_return include/linux/atomic/atomic-arch-fallback.h:1020 [inline]
RIP: 0010:atomic_inc_return include/linux/atomic/atomic-instrumented.h:454 [inline]
RIP: 0010:ihold+0x2a/0x70 fs/inode.c:452
Code: f3 0f 1e fa 55 48 89 e5 41 56 53 48 89 fb e8 0d 2a 95 ff 48 8d bb 68 01 00 00 be 04 00 00 00 e8 3c 09 ee ff 41 be 01 00 00 00 <f0> 44 0f c1 b3 68 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 1d
RSP: 0018:ffffc90001b5fcc8 EFLAGS: 00010246
RAX: ffff888115c79300 RBX: 0000000000000000 RCX: ffff888115c79300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90001b5fcd8 R08: ffffffff88bb7947 R09: 1ffffffff1176f28
R10: dffffc0000000000 R11: fffffbfff1176f29 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  000055558b9ed500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000168 CR3: 000000010e782000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	f3 0f 1e fa          	endbr64
   4:	55                   	push   %rbp
   5:	48 89 e5             	mov    %rsp,%rbp
   8:	41 56                	push   %r14
   a:	53                   	push   %rbx
   b:	48 89 fb             	mov    %rdi,%rbx
   e:	e8 0d 2a 95 ff       	call   0xff952a20
  13:	48 8d bb 68 01 00 00 	lea    0x168(%rbx),%rdi
  1a:	be 04 00 00 00       	mov    $0x4,%esi
  1f:	e8 3c 09 ee ff       	call   0xffee0960
  24:	41 be 01 00 00 00    	mov    $0x1,%r14d
* 2a:	f0 44 0f c1 b3 68 01 	lock xadd %r14d,0x168(%rbx) <-- trapping instruction
  31:	00 00
  33:	41 ff c6             	inc    %r14d
  36:	bf 02 00 00 00       	mov    $0x2,%edi
  3b:	44 89 f6             	mov    %r14d,%esi
  3e:	e8                   	.byte 0xe8
  3f:	1d                   	.byte 0x1d